Gas burner



Nov. 18, 1930. H E, KER'R 1,781,785

GAS BURNER Filed April 9, 1928 e Eril. Erq-6 attoznu 1 vl5 Fig. 2. Fig.5 is a to Patented Nov. 18, 1930 UNITED STATES PATENT OFFICE `HARRY E.KEER, OF CLEVELAND, OHIO, ASSIGNOR TO THE BAR'BER GAS BURNER j COMPANY,OF CLEVELAND,l OHIO, A CORPORATION lF OHIO GAS BURNER Application ledApril 9, 1928. Serial No. 268,404.

The present gas burner consists of a small air and gas commingling tube,such as shown and described in my Letters Patent of the United States,No. 1,560,248, dated Nov. 3,

1925, together with a slotted tip or cap for spreading the mixture andproducing radially-extending sheets of flame for use in heatingappliances, especially water heaters of the storage or tank type.

`0` In the accompanying drawing, Fi l is a perspective view of a gasburner em odying my improvement; Fig. 2 a vertical section of one of thetubes; and Figs. 3 and 4; cross sections on lines 3-3 and 1 -4,respectively of View of a tube, and the dotted lines in this the form ofthe flame.

The commingling tube A is preferably made of brass, and surmounted by aseparate 29 cap B. One end is screw-threaded for attachment with ahollow gas distributing body or manifold C and has a cupped entrance 2with a small discharge orifice 3 for the gas. Air intake ports 4 extendthrough the side walls of the tube and open into a central main passage5 in substantially the same plane as the outlet and of discharge orifice3.

he gas is jetted with considerable speed upwardly through passage 5,thereby entraining: a certain amount of air with it as predetermined bythe size of the air ports. Passage 5 is of relatively small diameter andalso of short length so that unless the flow of gas is intercepted at oropposite the mouth of the tube the gas will be projected out of the tubewith such velocity under normal gas pressures'that the mixture, ifignited, will be extinguished or blown out immediatley. In the burnershown and described in my Letters Patent referred to herein, two similartubes are mounted at right angles to bring two streams of gas together.The urpose in that case is to intercept ,the flow o` gas from one tubeby from the other tube, thereby deilecting the two jets upwardly andproducing a continuous mix and a single large column of flame whenoperating under normal gas pressure conditions.

In the present instance the mouth of tube gure represent roughly the jetof gas v A is covered by a slotted cap, tip or hollow bulbous member Bhavin the lower part y of its wall reduced in thickness to sleeve snuglyover the upper or mouth end of tube A. The thin wall permits the cap tobe affixed tightly upon the tube by a spinning or crimping. operation.

The top of cap B is rounded or ball-sha ed, and relatively narrow slots6 are sawe at right angles across the top and downwardlyinto the sidewalls of the cap. These slots intersect each other at the center of theround top of the cap, and a round pin 7 is driven through the opening atthe intersection, which pin is of sufficient length. to projectdownwardly axially of the cap linto the mouth of tube A where it mayserve as a central deflector or'spreader element for the jet of gas andentrained air when it is projected upwardly through the tube. Pin 7 isalso tapered in part to promote' spreading of the gas, and anenlargement orA head 8 on the upper end of the pin closes the crossslots at their intersection and promotes further spread of the mixtureas it passes through the cross slots in the round or bal shaped top ofthe cap.

Four thin sheets of gaseous mixture are discharged in vertical planes atright angles radially of the tube and four separate sheets of blue flameof substantial size are produced by a single tube constructed as hereindescribed. Accordingly, a single tube may be used as a gas burner, orany number of these tubes may be mounted and grouped together on a pipeor manifold for use in various types of heating appliances.

As proportioned and constructed the tube will function withoutback-firing, and when burning under normalor usual gas pressureconditions no flame will exist within the tube itself though iame iscarried by back drafts or otherwise to the vicinity of or into the airports. Therefore, this burner requires no guard or other protectingdevice around or in association withv the air ports.

What I claim, is:

1. AV gas burner, comprisin a relatively small tube having a main discarge passage of equal cross-sections including an air port, 100

V,2, n n 1,781,785

extending'into said passage and a gas orifice communicating with one endof said passage, together with a slotted deilecting cap surmounting themouth of the tube.

2. A as burner, comprising a relatively short tu e having a small mainpassage of equal cross-sections, including air ports and a gas orificeopening into the base of said pas sage, and a slotted cap having adeflecting element of smaller cross-section than said main passageextending axially thereof above and toward the mouth of said tube.

3. A gas burner, comprising a small tube having a main passage, an axialgas orifice, and transverse air intake ports, in combination With aslotted cap having a deflecting pin depending axially therefrom to theheight of the mouth lof said passage. l 4. A gas burner, comprising atube having ,av main passage, an axial gas orifice, and air intakeports, including a cross slotted hollow capof larger cross-section thansaid main passage, aflixed to the mouth end of said tube and carrying acentral spreader pin, said spreader pin beine of such cross section thatthe cross area o said cap including said spreader pin is not reducedover the cross area of said main passage.

5. A gas burner, comprising arelatively small tube having an axialorifice and transverse air ports, including a hollow bulbshaped membersecured 'to the mouth end of` said tube and slotted at right anglesacross its top, anda tapered spreader pin fixed to said cap attheintersection of said slots, said spreader pin extending axially throughsaid cap to the top end of said tube.

6. A gas burner, comprising a short tube having a small mainl passage, agas orifice of small diameter axially at one end of said passage, andsmall air ports in its side communicating vwith the base part of saidpassage, together with a separate hollow cap crimped to the mouth end ofsaid tube, having intersecting cross slots, and a spreader" pinextending into said cap and having a short head closing the intersectionof said slots.

In testimony whereof I aiiix my signature. s HARRY E. KERR.

